Auto · County · Illinois
Auto repair shops in Mercer County, IL
Competitor counts, household spending and official business counts for auto repair shops in Mercer County, IL, set against other counties and the U.S.
Groundwork market score · out of 100
Score 54 out of 100: Upper middle
Ranked #989 of 2,378 scored counties
#29 of 87 scored counties in Illinois
- Listings
- 14
- 1 chain location (7%)
- Official establishments
- 10
- Businesses with payroll, 2023
- Household spending a year
- $8.2M
- On vehicle maintenance and repairs · $1,243 a household
- Spending per listing
- $583K
- 31% above the U.S.
- Listings per 10k households
- 21.3
- In line with the U.S.
- Population, 2025
- 15,229
- −2.6% since 2020
See the auto repair shops around any address in Mercer County
The site report maps the auto repair shops on map listings near the address, by name and distance, and sizes the households and spending around it. Or open the report at the center of Mercer County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardSurvey estimates 2020–2024 · population estimates 2025 · official business counts 2023 · map listings September 2026 · Data credits · How we measure
What this means
As of September 2026, map listings count 14 auto repair shops in Mercer County. One of them (7%) is a chain location, against 16% across the U.S. That is 21.3 per 10,000 households, in line with the U.S. rate of 21.5.
Household spending on vehicle maintenance and repairs in Mercer County comes to about $8.2M a year: $1,243 per household, 30% above the U.S. average. Spread across 14 auto repair shops, that is $583K per shop, 31% above the U.S. figure of $445K. That spending covers all vehicle maintenance and repairs, which auto repair shops share with other businesses in the trade.
In 2023, official counts showed 10 businesses with payroll in Mercer County classed as mechanical, body and glass repair. That is one for every 657 households, against one for every 955 across the U.S. Another 9 one-person businesses have no payroll, by official counts.
Between 2020 and 2025, the population of Mercer County declined 2.6%, against +3.1% for the U.S. Mercer County scores 54 (upper middle) on the Groundwork market score for auto repair shops, ranking #989 of 2,378 scored counties and #29 of 87 scored counties in Illinois.
How Mercer County compares
The same measures for Illinois and the whole U.S. Spending per listing divides a year of household spending on all vehicle maintenance and repairs by the auto repair shops counted, so it measures the demand for each competitor, not any business’s revenue. Households per establishment does the same with the official count.
| Measure | Mercer County | Illinois | U.S. |
|---|---|---|---|
| Listings per 10k households | 21.3 | 20.3 | 21.5 |
| Spending per listing | $583K | $479K | $445K |
| Households per official establishment | 657 | 840 | 955 |
| Official establishment growth, 2019–2023 | n/a | −1.1% | +2.1% |
| Population growth, 2020–2025 | −2.6% | −0.6% | +3.1% |
| Spending per household on vehicle maintenance and repairs | $1,243 | $975 | $958 |
| Median household income | $74,182 | $83,390 | $80,734 |
| Groundwork market score | 54 | 38 |
Official counts and lending
Businesses
- Official establishments, 2019 to 2023
- 3 → 10
- Employees, 2023
- 19
- Annual payroll, 2023
- $526K
- One-person businesses, 2023
- 9Businesses with no payroll
- Map listings, September 2026
- 141 chain location
- Listings at the U.S. rate for this spending
- 18The U.S. ratio of listings to household spending, applied here
SBA-backed loans since fiscal 2022
- Loans
- 0
- Amount
- $0
SBA-backed loans to businesses classed as mechanical, body and glass repair in Mercer County, through June 2026, placed by the borrower’s ZIP code. Official establishments are businesses with payroll; the official counts leave out places with fewer than 3.
Population and households in Mercer County
- Population, 2025 estimate
- 15,229−2.6% since 2020
- Households
- 6,565
- Median age
- 43.9
- Homes lived in by their owners
- 84%
- Vehicles per household
- 2.2
- Land area
- 561 sq. mi.
- People per square mile
- 28
- Median household income
- $74,182+24.1% vs. 2015–2019, before inflation
- Average household income
- $92,846
- Median home value
- $146,700
- Jobs located here
- 3,052
- Daytime population
- 11,354Residents who don’t work, plus everyone whose job is here
Looking at a specific site in Mercer County?
These figures cover the whole county. A site report draws rings around one address and counts what’s inside them: households, spending, jobs, and the auto repair shops on map listings by name and distance.
Or open the report at the center of Mercer County. Signed out, you see a blurred preview; on an account, each report is one action.
Free10 actions over 3 days, no cardAuto repair shops across Illinois
Every Illinois market ranked →The highest-scoring counties in Illinois for auto repair shops, numbered among those based in Illinois, with Mercer County marked.
Top counties in Illinois
| Market | Score | Listings | Per 10k households | Spending per listing | Population growth | U.S. rank |
|---|---|---|---|---|---|---|
| 1Kendall County, IL | 82 | 78 | 17.2 | $752K | +9.9% | #78 of 2,378 |
| 2Piatt County, IL | 76 | 9 | 13.0 | $994K | +0.6% | #182 of 2,378 |
| 3Woodford County, IL | 70 | 22 | 15.0 | $818K | −0.8% | #330 of 2,378 |
| 4Marshall County, IL | 70 | 8 | 15.7 | $743K | −2.0% | #332 of 2,378 |
| 5Boone County, IL | 69 | 40 | 20.6 | $583K | +0.4% | #375 of 2,378 |
| 6Menard County, IL | 68 | 8 | 15.3 | $725K | −3.3% | #401 of 2,378 |
| 7Crawford County, IL | 67 | 18 | 24.0 | $475K | +0.1% | #477 of 2,378 |
| 8Jersey County, IL | 65 | 16 | 20.1 | $599K | −1.5% | #517 of 2,378 |
| 9Greene County, IL | 64 | 8 | 18.0 | $648K | −5.1% | #550 of 2,378 |
| 10Douglas County, IL | 63 | 11 | 14.2 | $781K | +0.5% | #588 of 2,378 |
| 29Mercer County, IL | 54 | 14 | 21.3 | $583K | −2.6% | #989 of 2,378 |
Other business types in Mercer County
Each with its Groundwork market score here, out of 100, where it has one.
Food and drink
Groceries and convenience
Auto
Beauty and personal care
Fitness and classes
Health care
Child care
Clothing and laundry
Home services
Real estate
Funeral services
Questions
How many auto repair shops are in Mercer County, IL?
Mercer County has 14 auto repair shops on map listings as of September 2026. One of them (7%) is a chain location. The listings count general, specialty, body and glass repair shops. Official counts show 10 businesses with payroll classed as mechanical, body and glass repair in 2023. Official counts list 9 one-person businesses without payroll.
How much do households in Mercer County, IL spend on vehicle maintenance and repairs?
About $8.2M a year, or $1,243 per household. That is 30% above the U.S. average (an index of 130, where 100 is the U.S. average). Spread across the 14 auto repair shops on map listings, it comes to $583K per shop. The spending figure covers all vehicle maintenance and repairs, not only auto repair shops. It is estimated from the incomes of the 6,565 households in Mercer County and national spending patterns by income.
How does Mercer County, IL compare with the U.S. for auto repair shops?
Mercer County has 21.3 auto repair shops per 10,000 households, in line with the U.S. rate of 21.5. Spending per shop is $583K, 31% above the U.S. figure of $445K. At the national ratio of auto repair shops to household spending, Mercer County would have about 18, against 14 on map listings. There is one business with payroll in the industry for every 657 households, against one for every 955 across the U.S.
How fast is Mercer County, IL growing?
Population estimates put Mercer County at 15,229 people in 2025, down 2.6% since 2020, against +3.1% for the U.S. It has 6,565 households. The median household income in Mercer County is $74,182 a year, 8% below the U.S. median of $80,734. That rose 24.1% from the 2015–2019 survey, before inflation.
What is the Groundwork market score?
The Groundwork market score runs from 0 to 100 and compares a market with others of its kind for one business type: states with states, metro areas with metro areas, small-town markets and counties with their own. It weighs household spending per competitor (35%), households per business with payroll (25%), population growth (20%) and spending power (20%), each ranked against those peers. A higher score means that, taken together, the market has more household spending and more households for each business already there, faster population growth and more spending per household than similar markets. It describes a market, not any one site or deal. Mercer County scores 54 for auto repair shops (upper middle), #989 of 2,378 scored counties.
How can I see the market around a specific site?
Run a Groundwork site report on an address in Mercer County. It maps the auto repair shops on map listings near the site and sizes the households and spending within the distance you choose. New accounts get 10 actions over 3 days, no card.
How the score works · Top markets for auto repair shops · All 56 business types in Mercer County
Screening a site or an acquisition in Mercer County?
A site report maps the competitors on map listings near an address and sizes the households and spending around it.
The button opens the report at the center of Mercer County. Signed out, you see a blurred preview; on an account, each report is one action.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Figures are estimates for research only. Not investment or real estate advice.